package task13;

import java.awt.geom.Area;

/**
 * Create by IntelliJ IDEA
 *
 * @author: jsonor
 * @date-Time: 2018/4/13 8:20
 * @description: 图形类，抽象类：3个抽象方法
 */
public abstract class Shape {
    public abstract double area();
    public abstract String getName();
    public abstract void output();
}
